Motorists.org
I was able to beat a ticket using the help from there and my fiance just got a ticket today as well, but I know that we can beat it knowing what I've learned.
I recommend joining, because the small fee is a fraction of what it will cost you in the long run.
Since each state is different once you're a member you can get state specific help.
This isn't just for speeding tickets, but that's their primary focus.